DataVXAIP AdvancesPaper
journal article·2022-09-01Open access

Electronic and optical characterization of bulk single crystals of cubic boron nitride (cBN)

Peker Milas, Sheikh Mathab, John Bishoy Sam Abraham, Jahangir Alam, M. V. S. Chandrashekar, Adam J. Robinson, Patrick M. Vora, Birol Ozturk, Michael G. Spencer

AIP Advances· Volume 12· Issue 9
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Source abstract

Abstract

Cubic boron nitride (cBN) is a relatively less studied wide bandgap semiconductor despite its many promising mechanical, thermal, and electronic properties. We report on the electronic, structural, and optical characterization of commercial cBN crystal platelets. Temperature dependent transport measurements revealed the charge limited diode behavior of the cBN crystals. The equilibrium Fermi level was determined to be 0.47 eV below the conduction band, and the electron conduction was identified as n-type. Unirradiated dark and amber colored cBN crystals displayed broad photoluminescence emission peaks centered around different wavelengths. RC series zero phonon line defect emission peaks were observed at room temperature from the electron beam irradiated and oxygen ion implanted cBN crystals, making this material a promising candidate for high power microwave devices, next generation power electronics, and future quantum sensing applications.
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Research context

BiomaterialsElectronic materials

OpenAlex topics: Diamond and Carbon-based Materials Research · Boron and Carbon Nanomaterials Research · Semiconductor materials and devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, Morgan State University 1 , Baltimore, Maryland 21251, USA

Johns Hopkins Applied Physics Laboratory 2 , Laurel, Maryland 20723, USA

Department of Electrical and Computer Engineering, University of South Carolina 3 , Columbia, South Carolina 29208, USA

Department of Physics and Astronomy, George Mason University 4 , Fairfax, Virginia 22030, USA and , Fairfax, Virginia 22030, USA

Quantum Science and Engineering Center, George Mason University 4 , Fairfax, Virginia 22030, USA and , Fairfax, Virginia 22030, USA

Department of Electrical and Computer Engineering, Morgan State University 5 , Baltimore, Maryland 21251, USA

Department of Electrical and Computer Engineering, Cornell University 6 , Ithaca, New York 14850, USA

Funding

National Science Foundation · Air Force Office of Scientific Research · U.S. Department of Energy

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